aarhus university centre for circular bioeconomy -...
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4 JUNE 2018 SENIOR RESEARCHER, HEAD OF CENTRE
UFFE JØRGENSENAARHUSUNIVERSITY
AARHUS UNIVERSITY CENTRE FOR CIRCULAR BIOECONOMY
WHAT ARE THE AGRICULTURAL AND ENVIRONMENTAL ARGUMENTS FOR INTRODUCING GREEN BIOREFINING?
CIRCULAR BIOECONOMY INTEGRATESSUSTAINABILITY AND PRODUCTIVITY
UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
WE ARE WELL AHEAD ON RECYCLING OF BIO-RESOURCES IN DENMARK – BUT THERE IS STILL A LOT TO DO
INSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET 15 MARCH 2018 SENIORFORSKER
UFFE JØRGENSEN
MAY-JUNE 2017DEAN
NIELS CHR. NIELSEN
SCIENCE AND TECHNOLOGY
AARHUS UNIVERSITYAU
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AARHUS UNIVERSITY THEMATICAL CENTRES
New strategical interdisciplinary thematical centres within global challenge areas:
Integrated Materials
Research
Digitization, big data,
and data analytics
iFoodCircular Bioeconomy iClimateWater
Technology
Integrated Life
Science
MAY-JUNE 2017DEAN
NIELS CHR. NIELSEN
SCIENCE AND TECHNOLOGY
AARHUS UNIVERSITYAU
For at få punktopstilling
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UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
KEY CBIO MISSION IS TO COUPLE UNIQUE RESEARCH PLATFORMS WITHIN THE UNIVERSITY
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UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
BRAND NEW CIRCULAR PRODUCT CHAINS NEED TO BEUNDERSTOOD, OPTIMIZED AND SYSTEM EVALUATED
Nutrient
lossesNutrient
uptake
Nutrient
recycling
15 MARCH 2018
UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
A NEW LAND-BASED PRODUCT CHAIN MAY HELP REDUCE N-LOSSES SIGNIFICANTLY
Nutrient
losses
Nutrient
uptake
Nutrient
recycling
UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
NEW CBIO POSITIONS TO ADDRESS KNOWLEDGE GAPS AND TO INCREASE INTERDISCIPLINARY COOPERATION
• Professor in Sustainable Dairy Production (co-finansed by Arla) – at ANIS
• Tenure-track in soil carbon and greenhouse gas emissions (co-financed by AGRO)
• Senior Scientist Lorie Hamelin (INRA, France) to write paper on DK biogas potential – AGRO
• PhD on nutrient resource management with mussels to meet environmental and economic
objectives (co-finansed by Mumipro) – at ENVS
• PhD on Food Waste Based Biorefineries (co-finansed by DECISIVE) – at ENVS
• PhD on bioeconomy as a driver for peatland rewetting and mitigation of greenhouse gas
emissions (co-financed by Era-Net PeatWise) – at AGRO
• PhD on extraction and evaluation of protein from macro-algae – at FOOD
• PhD on blue mussels, seaweed and insects for sustainable animal production – at ANIS
CBIO CO-ARRANGES THE DANISH BIOECONOMYCONFERENCE – NEXT 27/9 2018
UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
CBIO IS ORGANISED AROUND 7 RESEARCH PILLARS
What are the agricultural and environmental
arguments for introducing green biorefining?
BIORESOURCE
European agriculture faces numerous challenges
Productivity
• Biomass for food, feed, material and energy
• Stagnating yields
• Large import of protein feed
Environment
• High nutrient leaching (Nitrate and Water Framework Directives)
• High pesticide use
• Agriculture must contribute to EU climate goals (EU climate policy)
The answer may be sustainable intensification – more with less (losses)
We can produce more by using the whole growing
season? Case: spring barley in Denmark
We can pollute less by tightening the N cycle
HeadlineOptimized Crop Rotation• Energy maize + Winter rye (direct sowing end October)• Energy beets• Hemp + Triticale• Triticale early harvest (10-15 July) + undersown grass clover (two cuts: autumn and spring)
Permanent crops• Continuous triticale with straw removal (reference)• Continuous fodder maize (reference)• Miscanthus (M. x giganteus)• Miscanthus (M. sacchariflorus – Sibirian)• Tall fescue x perennial ryegrass (Festulolium)
• Reed canary grass (phalaris arundinacea)• Tall fescue (Festuca arundinacea)• Cocksfoot grass (Dactylis glomerata)• Grass clover SLU – (Bamse + Hykor + Donata + Lucerne (Alfalfa), Medicago sativa CRENO +
Alsike clover, T. hybridum, FRIDA + White clover, T. repens, HEBE + Eastern galega, Galega orientalis, GALE)
• Grass clover DLF - (DLF TRIFOLIUM mixture36 (10% white clover+10% festulolium+40% tall fescue+
15% ryegrass+10% timoté+10% meadow fescue+5% red fescue)
Bare soil plots• Mechanical weed control + herbicides• Herbicides only
Conventional crop rotation• Cereal crop rotation (2013: spring barley, 2014: winter barley, 2015: winter rape, 2016: winter wheat)
Production systems designed to cover the whole year investigated
High variation in total biomass yield
Manevski et al., 2017
Cumulated leaching is up to six times higher in
annual crops than in grasses
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Nit
rate
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Nitrate leaching 1.2 m
(accumulated, 1 Apr 2013-1 Apr 2014)
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* Not calculated yet
It is possible to increase yield AND decrease
nitrate leaching
Wheat175 kg N/ha
Barley130 kg N/ha
Grass cloverunfertilized
Festulolium425 kg N/ha
Beets130 kg N/ha
Jørgensen & Lærke, 2016
Fulfilment of the Water Framework Directive by changing approx. 9% of
agricultural land into perennial crops was shown by scenario analysis
Other measurements
• Solar radiation interception in green leaves
• Soil carbon after the first 5 years
• Nitrous oxide emissions to improve GHG balance calculation
• Weed development
• Pest & Diseases
• Pesticide use
• Economy ………..
So, what to do with all that grass?
Total crude protein yield in Foulum biomassSolati et al., 2018
Implementation of a radical new crop production paradigm is conditional to development of green biorefineries
Harvest
Pretreatm.
Storage
Transport
Bio-refinery
FeedFood F
High-value components
Fibres
C6
C5
Lignin
Residual
Oil
ColoursFlavors Medicin Other chemicals
Syngas
Reactor
Soil conditioner
Fertiliser Rest
BiogasSyngas
Fuels
ChemicalsMaterials
Crops are separated, protein precipitated and animals fed
to determine feeding value in current projects
BioValue (www.biovalue.dk)
Some conclusions
• Grasses are more efficient than annual crops in intercepting solar
radiation & produce high yield
• Nitrate losses can be kept low even at high fertiliser input in grasses
• High protein content in grass & legumes may be extracted for monogastric
animals
• Produce an easily digestible fibre fraction for polygastric animals
• Side-streams can deliver energy in biogas
• Grass and clover production increase soil carbon
• Pesticide use is very low in grass production
Farmers are eager to produce grass – if
there is a market
UFFE JØRGENSEN
15 MARCH 2018 SENIORFORSKERINSTITUT FOR AGROØKOLOGI
AARHUSUNIVERSITET
WE CAN RECYCLE ALL RESOURCES ON MARS -WHY NOT DO IT ON EARTH INSTEAD – MUCH CHEAPER!
JONATHAN D. TRENT, NASA & ”THE OMEGA GLOBAL INITIATIVE”
SEE MORE ON:
WWW.CBIO.AU.DK